The full suit, obtained by The Verge, alleges that Zynga CEO Mark Pincus and other insiders knew that the stock would crash when they sold shares this April.

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"Zynga's regular employees were still locked up from selling their shares. But the guys at the top, who saw what was coming down the pipe, got to cash out," Ferrara attorney Roy Shimon told The Verge.

In the suit, Ferrara argues that Zynga's executives didn't disclose critical information to shareholders, such as a "rapid decline" in subscribers and goods sold as well as a "substantial" delay on The Ville and other new games.

"Zynga misrepresented or failed to disclose material adverse facts about its business, operations, and growth prospects including, among other things, that: (1) Zynga had been experiencing a rapid decline in user numbers and virtual goods sold in existing web games; (2) Zynga had faced substantial delays in launching new web games; and (3) Zynga's revenue and bookings were entirely dependent on Facebook's online gaming platform," the suit says.

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Ferrara also says that when asked why he sold his stock this April, Zynga's CEO dodged the question.

"During a conference call held by Zynga to discuss its second quarter financial results, BTIG analyst, Richard Greenfield, questioned Defendant Pincus about the timing of Defendant Pincus' sale of his personally held shares," the lawsuit says. "Defendant Pincus declined to address the issue, instead responding off-topic that 'we believe in the opportunity for social gaming and play to be a mass-market activity, as it is already becoming.'"

The suit says that Zynga's execs knew the company was in trouble, and if they didn't, they "acted with reckless disregard for the truth" by not digging up the facts before the stock's collapse last week.

I've again reached out to Zynga for comment and will update should they respond.